Here are 25 Interesting X-rated Historical Facts. 1-5 Interesting X-rated Historical Facts 1. The first thing the “Father of Microbiology,” Anton van Leeuwenhoek, put under a microscope was his semen. In 1677 van Leeuwenhoek examined fresh semen, in which he observed living spermatozoa. It was understood that semen was integral to the creation of life,…
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